Definition of mourning cloak
: a blackish-brown nymphalid butterfly (Nymphalis antiopa) that has a broad yellow border on the wings and is found in temperate parts of Europe, Asia, and North America
Keep scrolling for more
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
Ask the Editors
- Why is there a 'd' in 'fridge' but not in 'refrigerator'?
- 'All Intensive Purposes' or 'All Intents and Purposes'?
- Is Singular 'They' a Better Choice?